Spring Boot学习笔记（七）SpringBoot：JPA + Druid 多数据源_springboot1.5 jpa durid多数据源-优快云博客

本文链接：https://blog.youkuaiyun.com/Stephanie17395/article/details/98363464

本文介绍了如何在Spring Boot中使用JPA和Druid配置多数据源，包括创建两个数据库test和books，设置不同的数据源前缀，自定义数据源配置类，实体类，DAO层和Controller层的实现，最后展示了访问不同数据源列表的URL。

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SpringBoot：JPA + Druid 多数据源

参考出处，根据Spring版本不同做出了相应的调整
上一篇：Spring Data JPA：分类查询、自定义查询、联表（多表查询）

创建两个数据库test和books，test数据库包含t_user表，books包含book表：

t_user表建立：

SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for t_user
-- ----------------------------
DROP TABLE IF EXISTS `t_user`;
CREATE TABLE `t_user`  (
  `t_id` int(11) NOT NULL AUTO_INCREMENT COMMENT '编号',
  `t_name` varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '名称',
  `t_age` int(10) NULL DEFAULT NULL COMMENT '年龄',
  `t_address` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '家庭住址',
  `t_pwd` varchar(100) CHARACTER SET latin1 COLLATE latin1_swedish_ci NULL DEFAULT NULL COMMENT '用户登录密码',
  PRIMARY KEY (`t_id`) USING BTREE
) ENGINE = MyISAM AUTO_INCREMENT = 10 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_user
-- ----------------------------
INSERT INTO `t_user` VALUES (1, 'Ray', 6, 'zh', '123');
INSERT INTO `t_user` VALUES (2, 'q343509740', 18, 'zh', '456');
INSERT INTO `t_user` VALUES (3, 'Rain', 24, 'zh', '789');

SET FOREIGN_KEY_CHECKS = 1;

book表建立：

SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for book
-- ----------------------------
DROP TABLE IF EXISTS `book`;
CREATE TABLE `book`  (
  `b_id` int(11) NOT NULL AUTO_INCREMENT,
  `b_name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  PRIMARY KEY (`b_id`) USING BTREE
) ENGINE = MyISAM AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of book
-- ----------------------------
INSERT INTO `book` VALUES (1, 'SpringBoot入门');
INSERT INTO `book` VALUES (2, 'SpringData实战');
INSERT INTO `book` VALUES (3, 'SpringData放弃');

SET FOREIGN_KEY_CHECKS = 1;

pom.xml 导入依赖：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>wen</groupId>
    <artifactId>datademo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>datademo</name>
    <description>Demo project for Sp